Aviation Dictionary

Dry adiabatic lapse rate (DALR)

The rate of decrease of temperature with height of unsaturated air lifted adiabatically (not heat exchange). Numerically the value is 3 °C or 5.4 °F per 1,000 feet.

Dictionary Term

Dry adiabatic lapse rate (DALR)

Definition

The rate of decrease of temperature with height of unsaturated air lifted adiabatically (not heat exchange). Numerically the value is 3 °C or 5.4 °F per 1,000 feet.

References

Glider Flying Handbook · Federal Aviation Administration · 2024